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ITO- 748,593. PATENTED JAN. 5, 1904..

L. EGK.

GALENDBRING MACHINE. APPLICATION FILED JULY 9. 1903.

N0 MODEL.

1 PNEYS ma NORRIS PETERS cu, FHOTO-HTHQ, WASHINGTON, o. c.

UNITED STATES Patented January 5, 1904.

LORENZ EGK, OF DUSSELDORF, GERMANY.

CALENDERING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 748,593, dated January5, 1904.

Application filed July 9, 1903. $erial No. 164,850. (No model.)

movable upper and lower rollers that may be pressed against said middleone, and in particular to means for effecting said pressing action.

My improvements in the means hitherto employed for pressing the rollersagainst each other consist in certain arrangements and combinations ofparts, as are fully described hereinafter; and in order to makemyinvention more clear I refer to the accompanying drawings, in whichsimilar letters denote sim i-' lar parts throughout the several views,and in which- Figure 1 is a representation of a calendering-machine withthree rollers, of which the upper and the lower are connected with thedevice constituting my invention. Fig. 2 is a detached view of saiddevice, showing a slightly-modified form of construction. Fig. 3 showsanother modification, and Fig. 4 shows a portion of a fourth form.

In each figure the cylinder (1 is shown in vertical section. Thestationary bearings m of the middle roller 'm are fixed to the frame 9of the calendering-machine. The bearings 0 and u of the other tworollers, 0 and u, may glide along suitable guide pieces of said frame.The bearings o are connected by a lever a, fulcrumed at a, with apiston-rod 0,

having a piston 0 located in a cylinder d.

The latter contains another piston,e, the piston-rod e of which isconnected by a lever b, fulcrumed at b with the bearings 11.. A pipe Z,terminating into the cylinder d, serves for leading water, compressedair, or steam into said cylinder, so as therebyto press the rollers 0and 11. against the roller m, and thus upon the fabric or paper passedthrough between said rollers. The respective material may pass round theroller m-t'. 6., below the roller 0-as well as above the roller u, ortwo separate breadths may be treated at a time, the one passing throughbetween 0 and m, the other between 11. and m.

The pistons c and e are of equal area, and the pressure exerted uponthem is thus of equal intensity. There are also in the example shown nomeans to vary that pressure. Where the pressure exerted upon the twopistons shall be of diiferent intensity, as is necessary for some kindsof goods, the ar rangement shown in Fig. 2 may be employed. The cylinder(1 consists in this case of two pistons of difierent diameter, thesmaller portion containing the piston c, the larger the piston e Thepressure exerted upon the roller u, will thus be greater than thatexerted upon the roller 0, according to the excess of area of the pistonc with respect to the piston c. When the intensity of the pressureexerted'upon the one or the other piston or upon both pistons shall bevariable, the arrangements shown in Fig. 3 may be made use of. In thisinstance the cylinder d is divided by a partition wal1 w into twochambers, oneof which contains the piston c, the other the piston e. Thepipe Z is divided into two branches Z Z one of the latter terminatinginto the one chamber, the. other into the other chamber, of thecylinder.

A three-way cook it allows of conducting the water, steam, or the likeeither into any one of said chambers or in both at a time, just as theposition of the plug of said cock may be. (Compare h and h.) In the formof construction shown the water, 850., may be led away from the upperchamber by means of a pipe 25, so as to relieve the piston c from thepressure when desired or necessary. To prevent a damage by the recoil ofthe roller 0 on the pressure being relieved, a spring f is insertedbetween the piston o and the wall w.

A reduction-valve r or the like serves for preventing the water, 850.,from exceeding a certain maximum power.

The two branch pipes Z l may be dispensed with if the three-way cock issituated within the wall w, as shown in Fig. 4..

It is self-evident that the pipe connections and the like must in everycase suit the requirements of the respective plant. The devicesdescribed and their various possible modifications may be used also inconnection with calendering-machines having more than three rollers, andtwo or more of any kind of such machines may be operated from one sourceof power.

Having now described my invention, what I desire to secure by LettersPatent of the United States is 1. In a calendering-machine having astationary roller, and above and below the same at least onevertically-movable roller, the combination with said movable rollers, ofa cylinder, two pistons located in said cylinder; connections betweensaid pistons and said movable rollers; and means for actuating saidpistons, for the purpose as described.

2. In a calendering-machine having a stationary roller, and above andbelow the same at least one vertically-movable roller, the combinationwith said movable rollers, of a cylinder, two pistons of differentdiameters located in said cylinder; connections between said pistons andsaid movable rollers; and means for actuating said pistons, for thepurpose as described.

3. In a calendering-machine, having a sta tionary roller, and above andbelow the same at least one vertically-movable roller, the combinationwith said movable rollers, of a cylinder, two pistons located in saidcylinder; a wall located between said pistons and dividing said cylinderinto two chambers; connections between said pistons and said movablerollers; and means for actuating said pistons, for the purpose asdescribed.

4.. In a calendering-machine having a stationary roller, and above andbelow the same at least one vertically-movable roller, the combinationwith said movable rollers, of a cylinder, two pistons located in saidcylinder; connections between said pistons and said movable rollers; andmeans for variably actuating said pistons, for the purpose as described.

5. In a calendering-machine having a stationary roller, and above andbelow the same at least one verticallymovable roller, the combinationwith said movable rollers, of a cylinder, two pistons located in saidcylinder; connections between said pistons and said movable rollers; andmeans for variably actuating either of said pistons, for the purpose asdescribed.

6. In a calendering-machine having a stationary roller, and above andbelow the same at least one verticallymovable roller, the combinationwith said movablerollers, of a cylinder, two pistons located in saidcylinder; connections between said pistons and said movable rollers; andmeans for leading a fluid under pressure into, and out of, saidcylinder, for the purpose as described.

7. In a oalendering-machine having a stationary roller, and above andbelow the same at least one vertically-movable roller, the combinationwith said movable rollers, of a cylinder, two pistons located in saidcylinder; a wall located between said pistons and dividing saidcylinderinto two chambers; connections between said pistons and saidmovable rollers; pipes for leading a fluid under pressure into saidchambers, and means for regulating the flow of said fluid, for thepurpose as described.

8. In a calendering-machine a stationary roller, and above and below thesame at least one vertically-movable roller, the combination with saidmovable rollers, of a cylinder, two pistons located in said cylinder; awall located between said pistons and dividing said cylinder into twochambers; connections between said pistons and said movable rollers, apipe for leading a fluid under pressure into said chamber, and athree-way cook located in said wall, and adapted to regulate the flow ofsaid fluid from said pipe into the said chambers, for the purpose asdescribed. In witness whereof Ihave hereunto set my hand in presence oftwo witnesses.

LORENZ ECK. Witnesses:

WILLIAM ESSENWEIN, PETER LIEBER.

